Humming noise from air box?
#3
#4
Mine did it once when evacuating for a hurricane after sitting in traffic for 7hrs or so.That leaves me to think it is heat related.It hasn't done it since and I have 170,000 miles on it.If it ever does it again I will replace the IAC.I do remember it being very loud and annoying but if I gave it a little throttle it went away.
#10
Mine does the same thing only does it after the truck sits and idles, like in the drive thru, or waiting in line at the boat launch. when i give a little thorttle it goes a away for a bit then starts back up, but like i said it only does it when i sit still for an extended period.. Very annoying..
so is it the IAC or the MAF?
so is it the IAC or the MAF?
#11
If you give it throttle you are no longer idling, thus the IAC (Idle Air Control) valve is not a problem. If at idle, you have a howl it sounds like the IAC. If you want to clean the MAF and see if it helps get a can of stuff, I think it's called CNC Electronics cleaner or something like that, check the how-to section for the cleaning how to and clean it up.
EDIT: Couldn't find a how-to here so check out this one
http://www.therangerstation.com/tech.../CleanMAF.html
EDIT: Couldn't find a how-to here so check out this one
http://www.therangerstation.com/tech.../CleanMAF.html
Last edited by Shalafi49; 07-18-2006 at 07:14 AM.
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